For fifteen-year-old Haven this is the summer where everything changes. Dad is remarrying. Her sister Ashley is planning a wedding of her own. They're both moving on, but Haven is lost in memories of a time when life was happy and her family was whole. And then Ashley's ex, the charming and funny Sumner Lee, arrives in town. He reminds Haven of carefree days gone by, and she can't help but wonder — has fate brought this person from her past back to change her future?